C1 and C2 Settings

Hi,
I am not an experienced pilot, but i am trying my best on caring details. Hope you can help me. (Please do not give any info which you are not sure about, or at least inform us your being unsure.)I dont want to take risks trying. May anyone please tell me the details?

The c1 and c2 are buttons on the back of your controller that you can custom set the functions listed. I use the C1 for the camera a foreword /Down. When I want to point the camera down I press the C1 and the lens points straight down. You don't have to use the roller. I use the C2 for camera settings. When I press the C2 the camera settings come up on the screen and I can change in flight. Play with the different settings inside but take the props off.

Hey guys. I have set my C1 button to camera down/forward. Every time I click the C1 button now on my P3 Pro RC I receive an iOS popup with the message "DJI GO would like to communicate with the DJI C1". The action still works but the popup requires me to manual 'Allow' or 'Ignore'. The popup only seems to occur with the C1 button as I have tried swapping camera down/forward to the C2 button and popup does not occur and assigned a different function to the C1 button with popup message still occurring. Not sure if this could have something to do with my iOS upgrade perhaps as this prob was non existent before the upgrade.